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        在React中优雅地使用弹窗——useModal的优化
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          <p>这是我参与11月更文挑战的第19天，活动详情查看：<a target="_blank" rel="noopener" href="https://juejin.cn/post/7023643374569816095" title="https://juejin.cn/post/7023643374569816095">2021最后一次更文挑战</a></p>
<p>接上文，之前介绍了useModal的简单封装思路，但是这种方法有一个副作用：弹窗的关闭的动效没了。如果说这可以勉强接受的话，那么再看下面这个效果：</p>
<p>加了一个confirmLoading的效果，弹窗先关闭，又开启。</p>
<p><img src="./../imgs/29b6b15893e049a78bcfd9dababd7be7.png" alt="modal-loading.gif"> 代码如下： TestPage.tsx</p>
<figure class="highlight tsx"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">export</span> <span class="keyword">default</span> <span class="keyword">function</span> <span class="title function_">TestPage</span>(<span class="params"></span>) &#123;</span><br><span class="line">  <span class="keyword">const</span> &#123;open,<span class="title class_">FormModal</span>: <span class="title class_">UserModal</span>&#125; = <span class="title function_">useFormModal</span>(&#123;<span class="attr">title</span>:<span class="string">&#x27;新建用户&#x27;</span>&#125;,<span class="title class_">React</span>.<span class="title function_">forwardRef</span>(<span class="title class_">UserForm</span>))</span><br><span class="line"></span><br><span class="line">  <span class="keyword">return</span> (</span><br><span class="line">    <span class="language-xml"><span class="tag">&lt;<span class="name">div</span>&gt;</span></span></span><br><span class="line"><span class="language-xml">      <span class="tag">&lt;<span class="name">div</span> <span class="attr">className</span>=<span class="string">&quot;text-center&quot;</span>&gt;</span></span></span><br><span class="line"><span class="language-xml">        <span class="tag">&lt;<span class="name">Button</span> <span class="attr">type</span>=<span class="string">&quot;primary&quot;</span> <span class="attr">onClick</span>=<span class="string">&#123;open&#125;</span>&gt;</span></span></span><br><span class="line"><span class="language-xml">          新增</span></span><br><span class="line"><span class="language-xml">        <span class="tag">&lt;/<span class="name">Button</span>&gt;</span></span></span><br><span class="line"><span class="language-xml">      <span class="tag">&lt;/<span class="name">div</span>&gt;</span></span></span><br><span class="line"><span class="language-xml">      <span class="tag">&lt;<span class="name">UserModal</span> <span class="attr">depart</span>=<span class="string">&#123;1&#125;</span>   /&gt;</span></span></span><br><span class="line"><span class="language-xml">    <span class="tag">&lt;/<span class="name">div</span>&gt;</span></span></span><br><span class="line">  );</span><br><span class="line">&#125;</span><br><span class="line"></span><br></pre></td></tr></table></figure>

<p>useFormModal.tsx</p>
<figure class="highlight tsx"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> useFormModal = <span class="keyword">function</span> &lt;T&gt;(<span class="attr">modalProps</span>: <span class="title class_">ModalProps</span>, <span class="title class_">Slot</span>: <span class="title class_">React</span>.<span class="property">ComponentType</span>&lt;T&gt;) &#123;</span><br><span class="line">  <span class="keyword">const</span> [visiable, setVisiable] = <span class="title function_">useState</span>(<span class="literal">false</span>);</span><br><span class="line">  <span class="keyword">const</span> [loading, setLoading] = <span class="title function_">useState</span>(<span class="literal">false</span>);</span><br><span class="line">  <span class="keyword">const</span> <span class="title function_">open</span> = (<span class="params"></span>) =&gt; &#123;</span><br><span class="line">    <span class="title function_">setVisiable</span>(<span class="literal">true</span>);</span><br><span class="line">  &#125;;</span><br><span class="line">  <span class="keyword">const</span> <span class="title function_">close</span> = (<span class="params"></span>) =&gt; &#123;</span><br><span class="line">    <span class="title function_">setVisiable</span>(<span class="literal">false</span>);</span><br><span class="line">  &#125;;</span><br><span class="line">  <span class="keyword">const</span> <span class="title function_">FormModal</span> = (<span class="params">slotProps: T</span>) =&gt; &#123;</span><br><span class="line">    <span class="keyword">const</span> <span class="title function_">onCancel</span> = (<span class="params"></span>) =&gt; &#123;</span><br><span class="line">      <span class="title function_">close</span>();</span><br><span class="line">    &#125;;</span><br><span class="line">    <span class="keyword">const</span> ref = <span class="title class_">React</span>.<span class="property">useRef</span>&lt;<span class="title class_">FormInstance</span>&gt;();</span><br><span class="line">    <span class="keyword">const</span> <span class="title function_">ok</span> = (<span class="params"></span>) =&gt; &#123;</span><br><span class="line">      ref.<span class="property">current</span>?.<span class="title function_">submit</span>();</span><br><span class="line">    &#125;;</span><br><span class="line">    <span class="keyword">return</span> (</span><br><span class="line">      <span class="language-xml"><span class="tag">&lt;<span class="name">Modal</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">onCancel</span>=<span class="string">&#123;onCancel&#125;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">onOk</span>=<span class="string">&#123;ok&#125;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">visible</span>=<span class="string">&#123;visiable&#125;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">wrapClassName</span>=<span class="string">&quot;modal-wrap&quot;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">okText</span>=<span class="string">&quot;提交&quot;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">cancelButtonProps</span>=<span class="string">&#123;&#123;</span> <span class="attr">shape:</span> &#x27;<span class="attr">round</span>&#x27; &#125;&#125;</span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">okButtonProps</span>=<span class="string">&#123;&#123;</span> <span class="attr">shape:</span> &#x27;<span class="attr">round</span>&#x27; &#125;&#125;</span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">confirmLoading</span>=<span class="string">&#123;loading&#125;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">width</span>=<span class="string">&#123;600&#125;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        &#123;<span class="attr">...modalProps</span>&#125;</span></span></span><br><span class="line"><span class="tag"><span class="language-xml">      &gt;</span></span></span><br><span class="line"><span class="language-xml">        <span class="tag">&lt;<span class="name">Slot</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">          <span class="attr">ref</span>=<span class="string">&#123;ref&#125;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">          &#123;<span class="attr">...slotProps</span>&#125;</span></span></span><br><span class="line"><span class="tag"><span class="language-xml">          <span class="attr">afterSubmit</span>=<span class="string">&#123;()</span> =&gt;</span> &#123;</span></span><br><span class="line"><span class="language-xml">            setLoading(false);</span></span><br><span class="line"><span class="language-xml">            close();</span></span><br><span class="line"><span class="language-xml">          &#125;&#125;</span></span><br><span class="line"><span class="language-xml">          beforeSubmit=&#123;() =&gt; setLoading(true)&#125;</span></span><br><span class="line"><span class="language-xml">        /&gt;</span></span><br><span class="line"><span class="language-xml">      <span class="tag">&lt;/<span class="name">Modal</span>&gt;</span></span></span><br><span class="line">    );</span><br><span class="line">  &#125;;</span><br><span class="line"></span><br><span class="line">  <span class="keyword">return</span> &#123;</span><br><span class="line">    <span class="title class_">FormModal</span>,</span><br><span class="line">    open,</span><br><span class="line">  &#125;;</span><br><span class="line">&#125;;</span><br><span class="line"><span class="keyword">export</span> <span class="keyword">default</span> useFormModal;</span><br></pre></td></tr></table></figure>

<p>UserForm.tsx</p>
<figure class="highlight tsx"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">interface</span> <span class="title class_">UserFormPropsType</span> &#123;</span><br><span class="line">  depart?: <span class="built_in">number</span>;</span><br><span class="line">  beforeSubmit?: <span class="function">(<span class="params">values: <span class="built_in">any</span></span>) =&gt;</span> <span class="built_in">void</span>;</span><br><span class="line">  afterSubmit?: <span class="function">(<span class="params">values: <span class="built_in">any</span>, form: FormInstance&lt;<span class="built_in">any</span>&gt;</span>) =&gt;</span> <span class="built_in">void</span>;</span><br><span class="line">&#125;</span><br><span class="line"><span class="keyword">const</span> <span class="title function_">UserForm</span> = (<span class="params">props: React.PropsWithChildren&lt;UserFormPropsType&gt;, ref?: React.ForwardedRef&lt;FormInstance&gt;</span>) =&gt; &#123;</span><br><span class="line">  <span class="keyword">const</span> [form] = <span class="title class_">Form</span>.<span class="title function_">useForm</span>();</span><br><span class="line"></span><br><span class="line">  <span class="keyword">const</span> <span class="title function_">onSubmit</span> = <span class="keyword">async</span> (<span class="params">values: <span class="built_in">any</span></span>) =&gt; &#123;</span><br><span class="line">    props.<span class="property">beforeSubmit</span>?.(values);</span><br><span class="line">    <span class="comment">// 模拟请求</span></span><br><span class="line">    <span class="keyword">await</span> <span class="keyword">new</span> <span class="title class_">Promise</span>(<span class="function">(<span class="params">r</span>) =&gt;</span> &#123;</span><br><span class="line">      <span class="built_in">setTimeout</span>(r, <span class="number">3000</span>);</span><br><span class="line">    &#125;);</span><br><span class="line">    props.<span class="property">afterSubmit</span>?.(values, form);</span><br><span class="line">    message.<span class="title function_">success</span>(<span class="string">&#x27;操作完成~&#x27;</span>)</span><br><span class="line">    form.<span class="title function_">resetFields</span>();</span><br><span class="line">  &#125;;</span><br><span class="line">  <span class="keyword">return</span> (</span><br><span class="line">    <span class="language-xml"><span class="tag">&lt;<span class="name">div</span> <span class="attr">className</span>=<span class="string">&quot;form&quot;</span>&gt;</span></span></span><br><span class="line"><span class="language-xml">      <span class="tag">&lt;<span class="name">Form</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">onFinish</span>=<span class="string">&#123;onSubmit&#125;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">ref</span>=<span class="string">&#123;ref&#125;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">form</span>=<span class="string">&#123;form&#125;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">labelCol</span>=<span class="string">&#123;&#123;</span> <span class="attr">span:</span> <span class="attr">4</span> &#125;&#125;</span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">wrapperCol</span>=<span class="string">&#123;&#123;</span> <span class="attr">span:</span> <span class="attr">16</span> &#125;&#125;</span></span></span><br><span class="line"><span class="tag"><span class="language-xml">      &gt;</span></span></span><br><span class="line"><span class="language-xml">        <span class="tag">&lt;<span class="name">Form.Item</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">          <span class="attr">label</span>=<span class="string">&quot;用户名&quot;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">          <span class="attr">name</span>=<span class="string">&quot;uname&quot;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">          <span class="attr">rules</span>=<span class="string">&#123;[&#123;</span> <span class="attr">required:</span> <span class="attr">true</span>, <span class="attr">message:</span> &#x27;<span class="attr">Please</span> <span class="attr">input</span>  <span class="attr">username</span>!&#x27; &#125;]&#125;</span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        &gt;</span></span></span><br><span class="line"><span class="language-xml">          <span class="tag">&lt;<span class="name">Input</span> /&gt;</span></span></span><br><span class="line"><span class="language-xml">        <span class="tag">&lt;/<span class="name">Form.Item</span>&gt;</span></span></span><br><span class="line"><span class="language-xml">        <span class="tag">&lt;<span class="name">Form.Item</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">          <span class="attr">label</span>=<span class="string">&quot;用户邮箱&quot;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">          <span class="attr">name</span>=<span class="string">&quot;mail&quot;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">          <span class="attr">rules</span>=<span class="string">&#123;[&#123;</span> <span class="attr">required:</span> <span class="attr">true</span>, <span class="attr">message:</span> &#x27;<span class="attr">Please</span> <span class="attr">input</span> <span class="attr">mail</span>!&#x27; &#125;]&#125;</span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        &gt;</span></span></span><br><span class="line"><span class="language-xml">          <span class="tag">&lt;<span class="name">Input</span> /&gt;</span></span></span><br><span class="line"><span class="language-xml">        <span class="tag">&lt;/<span class="name">Form.Item</span>&gt;</span></span></span><br><span class="line"><span class="language-xml">        <span class="tag">&lt;<span class="name">Form.Item</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">          <span class="attr">label</span>=<span class="string">&quot;部门&quot;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">          <span class="attr">name</span>=<span class="string">&quot;depart&quot;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">          <span class="attr">rules</span>=<span class="string">&#123;[&#123;</span> <span class="attr">required:</span> <span class="attr">true</span>, <span class="attr">message:</span> &#x27;<span class="attr">Please</span> <span class="attr">input</span> <span class="attr">depart</span>!&#x27; &#125;]&#125;</span></span></span><br><span class="line"><span class="tag"><span class="language-xml">          <span class="attr">initialValue</span>=<span class="string">&#123;props.depart&#125;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        &gt;</span></span></span><br><span class="line"><span class="language-xml">          <span class="tag">&lt;<span class="name">Select</span>&gt;</span></span></span><br><span class="line"><span class="language-xml">            <span class="tag">&lt;<span class="name">Select.Option</span> <span class="attr">value</span>=<span class="string">&#123;1&#125;</span>&gt;</span>市场部<span class="tag">&lt;/<span class="name">Select.Option</span>&gt;</span></span></span><br><span class="line"><span class="language-xml">            <span class="tag">&lt;<span class="name">Select.Option</span> <span class="attr">value</span>=<span class="string">&#123;2&#125;</span>&gt;</span>财务部<span class="tag">&lt;/<span class="name">Select.Option</span>&gt;</span></span></span><br><span class="line"><span class="language-xml">            <span class="tag">&lt;<span class="name">Select.Option</span> <span class="attr">value</span>=<span class="string">&#123;3&#125;</span>&gt;</span>研发部<span class="tag">&lt;/<span class="name">Select.Option</span>&gt;</span></span></span><br><span class="line"><span class="language-xml">          <span class="tag">&lt;/<span class="name">Select</span>&gt;</span></span></span><br><span class="line"><span class="language-xml">        <span class="tag">&lt;/<span class="name">Form.Item</span>&gt;</span></span></span><br><span class="line"><span class="language-xml">      <span class="tag">&lt;/<span class="name">Form</span>&gt;</span></span></span><br><span class="line"><span class="language-xml">    <span class="tag">&lt;/<span class="name">div</span>&gt;</span></span></span><br><span class="line">  );</span><br><span class="line">&#125;;</span><br></pre></td></tr></table></figure>

<p>这两个bug的原因都是一样的</p>
<h2 id="原因及解决"><a href="#原因及解决" class="headerlink" title="原因及解决"></a>原因及解决</h2><p>问题代码在这里：</p>
<figure class="highlight tsx"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line">...</span><br><span class="line"><span class="keyword">const</span> useFormModal = <span class="keyword">function</span>(<span class="params"></span>)&#123;</span><br><span class="line">    <span class="keyword">const</span> [visiable, setVisiable] = <span class="title function_">useState</span>(<span class="literal">false</span>);</span><br><span class="line">    <span class="keyword">const</span> [loading, setLoading] = <span class="title function_">useState</span>(<span class="literal">false</span>);</span><br><span class="line">      ...</span><br><span class="line">    <span class="keyword">const</span> <span class="title function_">FormModal</span> = (<span class="params">slotProps: T</span>) =&gt; &#123;</span><br><span class="line">        <span class="keyword">return</span>  <span class="language-xml"><span class="tag">&lt;<span class="name">Modal</span>  </span></span></span><br><span class="line"><span class="tag"><span class="language-xml">                    <span class="attr">visible</span>=<span class="string">&#123;visiable&#125;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">                    <span class="attr">confirmLoading</span>=<span class="string">&#123;loading&#125;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">                &gt;</span>...<span class="tag">&lt;/<span class="name">Modal</span>&gt;</span></span></span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"> </span><br></pre></td></tr></table></figure>

<p>不管是调用setVisiable还是setLoading，都会导致 <code>const FormModal= ...</code>被重新执行一次，渲染后的弹窗不再是之前的弹窗了。</p>
<p>因此只要能够保持FormModal函数实例，就可以解决这个问题。但如果我们使用<code>useCallback</code>或者<code>useMemo</code>：</p>
<figure class="highlight ini"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"> const <span class="attr">FormModal</span> = () =&gt;&#123;&#125;</span><br><span class="line">return &#123;</span><br><span class="line">    FormModal: useCallback(FormModal,<span class="section">[]</span>),</span><br><span class="line">    open,</span><br><span class="line">  &#125;<span class="comment">;</span></span><br></pre></td></tr></table></figure>

<p>这么写会导致组件完全不更新，因此我们还需将</p>
<figure class="highlight scss"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">const <span class="selector-attr">[visiable, setVisiable]</span> = <span class="built_in">useState</span>(false);</span><br><span class="line">const <span class="selector-attr">[loading, setLoading]</span> = <span class="built_in">useState</span>(false);</span><br></pre></td></tr></table></figure>

<p>放到FormModal内。而对外如何开放打开弹窗的api呢？用ref</p>
<h3 id="useRef、forwardRef和useImperativeHandle"><a href="#useRef、forwardRef和useImperativeHandle" class="headerlink" title="useRef、forwardRef和useImperativeHandle"></a>useRef、forwardRef和useImperativeHandle</h3><ul>
<li><p>首先是用useRef创建一个ref指向FormModal <img src="./../imgs/1854cdecb8204130ae6ede9bf856cd64.png" alt="image.png"> 注意这里最好<strong>不要用createRef</strong>,后续文章再解释几个ref api的不同作用</p>
</li>
<li><p>这个ref还需要对外开放出去，使用useImperativeHandle给它增加open、close方法，供外部调用</p>
</li>
</ul>
<p><img src="./../imgs/f75403f63adc4770be663b727db0dc72.png" alt="image.png"></p>
<ul>
<li>外部调用方式：</li>
</ul>
<p><img src="./../imgs/0b528985f9c84a71a7c80cbc171fc351.png" alt="image.png"></p>
<p>open的参数可以作为表单组件的初始props，是可选的。</p>
<p>代码比较简单，但是类型定义有些复杂，整体见代码参考：</p>
<h3 id="代码参考"><a href="#代码参考" class="headerlink" title="代码参考"></a>代码参考</h3><p>useFormModal.tsx</p>
<figure class="highlight tsx"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line"><span class="keyword">type</span> <span class="title class_">ModalRefType</span>&lt;T&gt; = &#123; <span class="attr">open</span>: <span class="function">(<span class="params">initProp?: Partial&lt;T&gt;</span>) =&gt;</span> <span class="built_in">void</span>; <span class="attr">close</span>: <span class="function">() =&gt;</span> <span class="built_in">void</span> &#125; | <span class="literal">undefined</span>;</span><br><span class="line"></span><br><span class="line"><span class="keyword">const</span> useFormModal = <span class="keyword">function</span> &lt;T&gt;(<span class="attr">modalProps</span>: <span class="title class_">Partial</span>&lt;<span class="title class_">ModalProps</span>&gt;, <span class="title class_">Slot</span>: <span class="title class_">React</span>.<span class="property">ComponentType</span>&lt;T&gt;) &#123;</span><br><span class="line">  <span class="keyword">const</span> modalRef = useRef&lt;<span class="title class_">ModalRefType</span>&lt;T&gt;&gt;();</span><br><span class="line"></span><br><span class="line">  <span class="keyword">const</span> <span class="title class_">FormModal</span> = forwardRef&lt;<span class="title class_">ModalRefType</span>&lt;T&gt;, T&gt;(<span class="function">(<span class="params">slotProps, mRef</span>) =&gt;</span> &#123;</span><br><span class="line">    <span class="keyword">const</span> [visiable, setVisiable] = <span class="title function_">useState</span>(<span class="literal">false</span>);</span><br><span class="line">    <span class="keyword">const</span> [loading, setLoading] = <span class="title function_">useState</span>(<span class="literal">false</span>);</span><br><span class="line">    <span class="keyword">const</span> [slotInitProp, setSlotInitProp] = useState&lt;<span class="title class_">Partial</span>&lt;T&gt;&gt;();</span><br><span class="line">    <span class="keyword">const</span> <span class="title function_">open</span> = (<span class="params">initProp?: Partial&lt;T&gt;</span>) =&gt; &#123;</span><br><span class="line">      <span class="keyword">if</span> (initProp) &#123;</span><br><span class="line">        <span class="title function_">setSlotInitProp</span>(initProp);</span><br><span class="line">      &#125;</span><br><span class="line">      <span class="title function_">setVisiable</span>(<span class="literal">true</span>);</span><br><span class="line">    &#125;;</span><br><span class="line">    <span class="keyword">const</span> <span class="title function_">close</span> = (<span class="params"></span>) =&gt; &#123;</span><br><span class="line">      <span class="title function_">setVisiable</span>(<span class="literal">false</span>);</span><br><span class="line">    &#125;;</span><br><span class="line">    <span class="title function_">useImperativeHandle</span>(mRef, <span class="function">() =&gt;</span> (&#123; open, close &#125;));</span><br><span class="line">    <span class="keyword">const</span> <span class="title function_">onCancel</span> = (<span class="params"></span>) =&gt; &#123;</span><br><span class="line">      <span class="title function_">close</span>();</span><br><span class="line">    &#125;;</span><br><span class="line">    <span class="keyword">const</span> formRef = <span class="title class_">React</span>.<span class="property">useRef</span>&lt;<span class="title class_">FormInstance</span>&gt;();</span><br><span class="line">    <span class="keyword">const</span> <span class="title function_">ok</span> = (<span class="params"></span>) =&gt; &#123;</span><br><span class="line">      formRef.<span class="property">current</span>?.<span class="title function_">submit</span>();</span><br><span class="line">    &#125;;</span><br><span class="line">    <span class="keyword">return</span> (</span><br><span class="line">      <span class="language-xml"><span class="tag">&lt;<span class="name">Modal</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">onCancel</span>=<span class="string">&#123;onCancel&#125;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">onOk</span>=<span class="string">&#123;ok&#125;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">visible</span>=<span class="string">&#123;visiable&#125;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">wrapClassName</span>=<span class="string">&quot;modal-wrap&quot;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">okText</span>=<span class="string">&quot;提交&quot;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">cancelButtonProps</span>=<span class="string">&#123;&#123;</span> <span class="attr">shape:</span> &#x27;<span class="attr">round</span>&#x27; &#125;&#125;</span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">okButtonProps</span>=<span class="string">&#123;&#123;</span> <span class="attr">shape:</span> &#x27;<span class="attr">round</span>&#x27; &#125;&#125;</span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">confirmLoading</span>=<span class="string">&#123;loading&#125;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        <span class="attr">width</span>=<span class="string">&#123;600&#125;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">        &#123;<span class="attr">...modalProps</span>&#125;</span></span></span><br><span class="line"><span class="tag"><span class="language-xml">      &gt;</span></span></span><br><span class="line"><span class="language-xml">        <span class="tag">&lt;<span class="name">Slot</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">          <span class="attr">ref</span>=<span class="string">&#123;formRef&#125;</span></span></span></span><br><span class="line"><span class="tag"><span class="language-xml">          &#123;<span class="attr">...slotProps</span>&#125;</span></span></span><br><span class="line"><span class="tag"><span class="language-xml">          &#123;<span class="attr">...slotInitProp</span>&#125;</span></span></span><br><span class="line"><span class="tag"><span class="language-xml">          <span class="attr">afterSubmit</span>=<span class="string">&#123;()</span> =&gt;</span> &#123;</span></span><br><span class="line"><span class="language-xml">            setLoading(false);</span></span><br><span class="line"><span class="language-xml">            close();</span></span><br><span class="line"><span class="language-xml">          &#125;&#125;</span></span><br><span class="line"><span class="language-xml">          beforeSubmit=&#123;() =&gt; setLoading(true)&#125;</span></span><br><span class="line"><span class="language-xml">        /&gt;</span></span><br><span class="line"><span class="language-xml">      <span class="tag">&lt;/<span class="name">Modal</span>&gt;</span></span></span><br><span class="line">    );</span><br><span class="line">  &#125;);</span><br><span class="line">  <span class="keyword">return</span> &#123;</span><br><span class="line">    <span class="title class_">FormModal</span>: <span class="title function_">useCallback</span>(<span class="function">(<span class="params">props: PropsWithoutRef&lt;T&gt;</span>) =&gt;</span> &#123;</span><br><span class="line">      <span class="keyword">return</span> <span class="language-xml"><span class="tag">&lt;<span class="name">FormModal</span> <span class="attr">ref</span>=<span class="string">&#123;modalRef&#125;</span> &#123;<span class="attr">...props</span>&#125; /&gt;</span></span>;</span><br><span class="line">      <span class="comment">// eslint-disable-next-line react-hooks/exhaustive-deps</span></span><br><span class="line">    &#125;, []),</span><br><span class="line">    modalRef,</span><br><span class="line">  &#125;;</span><br><span class="line">&#125;;</span><br></pre></td></tr></table></figure>

<p>TestPage.tsx</p>
<figure class="highlight tsx"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">export</span> <span class="keyword">default</span> <span class="keyword">function</span> <span class="title function_">TestPage</span>(<span class="params"></span>) &#123;</span><br><span class="line">  <span class="keyword">const</span> &#123; modalRef, <span class="title class_">FormModal</span>: <span class="title class_">UserModal</span> &#125; = <span class="title function_">useFormModal</span>(</span><br><span class="line">    &#123; <span class="attr">title</span>: <span class="string">&#x27;新建用户&#x27;</span> &#125;,</span><br><span class="line">    <span class="title class_">React</span>.<span class="title function_">forwardRef</span>(<span class="title class_">UserForm</span>),</span><br><span class="line">  );</span><br><span class="line"></span><br><span class="line">  <span class="keyword">return</span> (</span><br><span class="line">    <span class="language-xml"><span class="tag">&lt;<span class="name">div</span>&gt;</span></span></span><br><span class="line"><span class="language-xml">      <span class="tag">&lt;<span class="name">div</span> <span class="attr">className</span>=<span class="string">&quot;text-center&quot;</span>&gt;</span></span></span><br><span class="line"><span class="language-xml">        <span class="tag">&lt;<span class="name">Button</span> <span class="attr">type</span>=<span class="string">&quot;primary&quot;</span> <span class="attr">onClick</span>=<span class="string">&#123;()</span>=&gt;</span>modalRef.current?.open(&#123;depart:1&#125;)&#125;&gt;</span></span><br><span class="line"><span class="language-xml">          新增</span></span><br><span class="line"><span class="language-xml">        <span class="tag">&lt;/<span class="name">Button</span>&gt;</span></span></span><br><span class="line"><span class="language-xml">      <span class="tag">&lt;/<span class="name">div</span>&gt;</span></span></span><br><span class="line"><span class="language-xml">      <span class="tag">&lt;<span class="name">UserModal</span>  /&gt;</span></span></span><br><span class="line"><span class="language-xml">    <span class="tag">&lt;/<span class="name">div</span>&gt;</span></span></span><br><span class="line">  );</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
        
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